Adafruit
Adafruit SHARP Memory Display Breakout - 2.7 400x240 Monochrome
The Adafruit SHARP Memory Display Breakout features a 2.7" 400×240 monochrome LCD that combines the ultra-low power consumption of e-paper with the fast refr...
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The Adafruit SHARP Memory Display Breakout features a 2.7" 400×240 monochrome LCD that combines the ultra-low power consumption of e-paper with the fast refresh rates of a traditional LCD. The larger display area and higher resolution make it ideal for detailed information displays, showing crisp black pixels on a grey background with an e-reader style appearance.
The bare display is mounted on a breakout board with a 3 V regulator, 5 V boost converter, and level shifting, making it compatible with both 3 V and 5 V power and logic. Communication requires only 3 SPI pins (write-only), but the entire 400×240 pixel framebuffer (~13.5 KB) must be stored in the microcontroller's RAM.
Key Features
- 2.7" 400×240 Monochrome Display – Black-on-grey, e-reader style appearance with high resolution
- Ultra-Low Power – E-paper-like power consumption with LCD-like refresh speed
- Daylight Readable – No backlight, but highly visible in ambient light
- SPI Interface – Write-only, requires only 3 data pins
- 3 V / 5 V Compatible – Onboard 3 V regulator, 5 V boost converter, and level shifting
- ZIF Socket Mounting – Display connects via ZIF socket with double-sided tape adhesion
- 4 Mounting Holes – Easy to attach to enclosures
Also Consider
- SHARP Memory Display 1.3" 168×144 – Smaller version requiring only ~3 KB RAM
Ideal For
- Low-power information displays and dashboards
- Outdoor-readable status panels and signage
- Battery-powered wearable or portable displays
- E-reader style interfaces with high resolution
Package Contents
- 1× SHARP Memory Display Breakout (2.7" 400×240, fully assembled)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- boost converter
- A boost converter is a switching power circuit that raises a lower input voltage to a higher output voltage. It is used when a device needs more voltage than its power source provides, for example running a 5 V sensor from a 3.3 V supply.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- ESP32
- ESP32 is a family of low-cost microcontroller chips and modules from Espressif with built-in WiFi and Bluetooth. They support programmable firmware and over-the-air updates, and are commonly programmed with toolchains such as the Arduino core and ESP-IDF.
- LCD
- LCD stands for liquid crystal display, a screen technology that uses a backlight and liquid crystals to show images or text. It matters because LCD modules usually need a display driver and enough controller pins or a bus interface to send image data.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- RAM
- RAM (random-access memory) is fast, temporary memory a device uses for working data while it is running; in its common volatile form, its contents are lost when power is removed. Some devices offer a mode that applies settings to RAM only, which is handy for testing changes temporarily because they are not stored permanently and disappear at power-off.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
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adafruit sharp memory display breakout
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